Cozying up with Nancy Pelosi to talk climate change might've seemed like a great idea in 2008, but Newt Gingrich now is voicing regrets.

Was Newt Gingrich popping Teamocil back in 2008? Because he certainly seems to be acting all warm and fuzzy and kind of out of character in this TV spot about climate change, starring no other than GOP arch-nemesis Nancy Pelosi.

This week, the hangover seems to have hit him. On New Hampshire radio station WGIR, Gingrich said that he "probably wouldn't" do another global-warming spot, because this last one had been "misconstrued." Gingrich claimed: "Look, I was trying to make a point that we shouldn't be afraid to debate the left, even on the environment."

So who misconstrued the ad? Well, probably the same Tea Party folks that Gingrich is hoping will support him in his 2012 presidential run. And it's no wonder why: He certainly sounds like a man who believes the government should dive with both hands into this climate-change problem. Take a look at the ad below, which was sponsored by Al Gore's Alliance for Climate Protection (now the Climate Reality Project), and see how little "debate" is going on.

(At least on his website Gingrich is keeping it real: His "American Energy Plan" would kill off the Environmental Protection Agency and force the losers of environmental lawsuits to pay all legal bills of the opposing side.)